NCIt Definition: A genetic syndrome resulting from a partial deletion on the short arm of chromosome 5. It is characterized by a cat-like cry in infancy, microcephaly, mental retardation, growth failure, round face, hypertelorism, and cardiac failure.

GARD Definition: Cri du chat syndrome, also known as 5p- (5p minus) syndrome or cat cry syndrome, is a genetic condition that is caused by the deletion of genetic material on the small arm (the p arm) of chromosome 5. Infants with this condition often have a high-pitched cry that sounds like that of a cat. The disorder is characterized by intellectual disability and delayed development, small head size, low birth weight, weak muscle tone in infancy, and distinctive facial features. While cri du chat syndrome is a genetic condition, most cases are not inherited. - this information is from GARD/ORDR/NCATS.

MSH Definition: An infantile syndrome characterized by a cat-like cry, failure to thrive, microcephaly, MENTAL RETARDATION, spastic quadriparesis, micro- and retrognathia, glossoptosis, bilateral epicanthus, hypertelorism, and tiny external genitalia. It is caused by a deletion of the short arm of chromosome 5 (5p-).

An infantile syndrome characterized by a cat-like cry, failure to thrive, microcephaly, MENTAL RETARDATION, spastic quadriparesis, micro- and retrognathia, glossoptosis, bilateral epicanthus, hypertelorism, and tiny external genitalia. It is caused by a deletion of the short arm of chromosome 5 (5p-).